Skip to content
youhoc
  • Pages
    • Home
    • Modern App Guidelines
    • Linux
      • Day 1: Linux Distributions & Navigation
      • Day 2: User Management
      • Day 3: File Permission & Ownership
      • Day 4: Package Management
      • Day 5: Services Management
    • Javascript
      • JS The Weird Part
        • Execution Context
        • Types & Operators
        • Objects & Functions
        • Error Handling & Strict Mode
        • Typescript, ES6, Tra
      • Modern JS
        • JS in the Browser
        • Data Storage JSON
        • Modern JS
        • Advanced Objects & Methods
        • Webpack & Babel
        • Async
      • jQuery
        • In-depth Analysis of jQuery
      • React-ready JS
        • Arrow Function
        • Template Literals
        • Logical AND, OR, Ternary, Nullish Operators
        • Destructuring & Rest Operator
        • Array Method
        • Immutability and Spread Operator
        • Promises, Async/Await, Callback
    • PHP
      • gruntJS
      • composer
      • MySQL
    • Docker
      • Container Basics
      • Container Networking
      • Container Image
      • Container Volume & Persistent Data
      • Dockerfile
      • Docker Compose
      • Docker Registry
    • Node.js
      • 1. Installing & Exploring
      • 2. Core Modules
      • 3. Get User Input
      • File System & Input Arguments
      • 5. Express Web Server
      • 6. Deploy to Heroku & Github
      • icon picker
        Authentication
      • 7. Databases
      • 8. Rest API
    • ReactJS
      • React from Andrew
        • Summary from Next
        • 1. Basics
        • 2. React Components
        • 3. Webpack
        • 4. Styling with SCSS
        • 5. React Router
        • 6. React Hook
      • Modern React From The Beginning
        • Intro to JSX
        • Vite Build Tools
        • Basic Component Creation
        • Component State
        • Props & Component Composition
        • useState with Inputs & Form Submission
        • useEffect, useRef & Local Storage
        • Async / Await and Http Request in React
        • React Router: Declarative Mode
        • ContextAPI
        • React Router: Framework Mode
          • File-routing & HTML Layouts
          • Server-side Data Query
          • Links & Navigation
          • Loaders
    • Typescript
      • Type User vs UserProp
    • Payload CMS
youhoc
/
/
Authentication

Authentication

bcryptjs
Install
const bcrypt = require('bcryptjs')
Auto-gen a salt and hash:
bcrypt.hash('bacon', 8, function(err, hash) {
});

OR

const hashedPass = await = bcrypt.hash()
Check hashed password:
check if an input pass is equal to a stored hashed pass

// As of bcryptjs 2.4.0, compare returns a promise if callback is omitted:
bcrypt.compare("B4c0/\/", hash).then((res) => {
// res === true
});

OR

const isMatch = await bcrypt.compare('hashedInputPass', hashedDBPass)
IMPORTANT:
Not hash pass when save operation
Hash pass right before added to DB
using Middleware in Mongoose
validate
save (just before a user is save)
https://mongoosejs.com/docs/api/model.html#model_Model-save
⁠

Define Schema for a Collection (Table)
// create a model for user
const User = mongoose.model('User', {
name: {
// set up types and validation here
type: String,
required: true,
trim: true
},
age: {...}
})

// actually is

const userSchema = new mongoose.Schema({
name: {
// set up types and validation here
type: String,
required: true,
trim: true
},
age: {...}
})

const User = mongoose.model('User', userSchema)
Then we can bind pre and post action to a Schema
userSchema.pre - do something before an event
⁠
userSchema.post
⁠
- do something after an event

Want to print your doc?
This is not the way.
Try clicking the ⋯ next to your doc name or using a keyboard shortcut (
CtrlP
) instead.